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# Isoxsuprine Hydrochloride
## Overview
Isoxsuprine hydrochloride is a peripheral vasodilator.
## Primary Indications
Treatment of peripheral vascular disease, particularly intermittent claudication. Its efficacy for this indication is not definitively established and is a subject of controversy.
## Adult Dosing
* **Intermittent Claudication:** 10 mg to 20 mg orally 3 to 4 times daily.
* **Maximum Dose:** Not explicitly defined, but higher doses may increase the risk of adverse effects.
## Pediatric Dosing
No established pediatric dosing.
## Dose Adjustments
No specific dose adjustments are recommended for hepatic or renal impairment. However, caution is advised in patients with cardiovascular disease.
## Contraindications
* Hypersensitivity to isoxsuprine.
* Use in the immediate postpartum period.
* In patients with glaucoma or hypotension.
## Adverse Effects
* **Common:** Nausea, vomiting, gastric distress, dizziness, lightheadedness, flushing, weakness, nervousness, rash.
* **Less Common:** Hypotension, tachycardia, myocardial ischemia (especially in patients with recent myocardial infarction).
## Key Drug Interactions
* **Antihypertensives:** Isoxsuprine may cause hypotension, potentially additive with antihypertensive agents.
* **Vasodilators:** Increased risk of hypotension.
## Monitoring
* Monitor for signs and symptoms of hypotension (dizziness, lightheadedness).
* Assess for improvement in peripheral vascular symptoms.
* Monitor for adverse effects.
## Clinical Pearls
* The clinical utility and efficacy of isoxsuprine for peripheral vascular disease are not well-supported by robust evidence.
* Onset of action is typically within 30 minutes, with peak effects at 1 to 2 hours.
* Duration of action is approximately 4 hours.
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*This information is intended for healthcare professionals. Always consult the most current prescribing information and local protocols for definitive guidance.*
